Might sound a bit funny but it suddenly stumbled upon me why do people have pubic hair? Axillary hair? I can understand body hair in terms of external thermal regulation. But hair in places where its already "warm"?
Isn't say armpit hair an increased surface area for bacteria to congregate, leading to odor?
Is the function of pubic/armpit hair, to decrease friction upon movement? Would you rather it removed permanently for hygienic reasons?